I am selling my Challenge Engineering X-Pipe Race version (Catless with Resonators) for a E9X M3.

I bought this from GTB Performance in March this year and haven't taken it out of the box. It's been sitting on a shelf in the garage and I never got around to installing it so I might as well sell it.

I am selling my Challenge Engineering X-Pipe Race version (Catless with Resonators) for a E9X M3.

I bought this from GTB Performance in March this year and haven't taken it out of the box. It's been sitting on a shelf in the garage and I never got around to installing it so I might as well sell it.